#ifndef __M_DB_H__
#define __M_DB_H__

#include <assert.h>
#include <mutex>
#include "util.hpp"



class user_table{
private:
    MYSQL *_mysql; //mysql操作句柄
    std::mutex _mutex;//互斥锁保护数据库的访问操作
public:
    user_table(const std::string &host,
            const std::string& username,
            const std::string& password,
            const std::string& dbname,
            uint16_t port = 3306)
    {
        _mysql = mysql_util::mysql_create(host,username,password,dbname,port);
        assert(_mysql != NULL);
    }
    ~user_table()
    {
        mysql_util::mysql_destory(_mysql);
        _mysql = NULL;
    }
    //注册时新增用户
    bool insert(Json::Value &user)
    {
        #define INSERT_USER "insert user values(null,'%s',SHA2('%s',256),1000,0,0);"

        //进行执行增加功能
        if(user["password"].isNull() || user["username"].isNull())
        {
            DLOG("INPUT PASSWORD OR USERNAME");
            return false;
        }
        char sql[4096] = {0};
        sprintf(sql,INSERT_USER,user["username"].asCString(),user["password"].asCString());
        bool ret = mysql_util::mysql_exec(_mysql,sql);
        if(ret == false)
        {
            DLOG("insert user info failed!!\n");
            return false;
        }
        return true;
    }
    //登录验证，并返回详细的用户信息
    bool login(Json::Value &user)
    {
        //以用户名和密码共同作为查询过滤的条件,查询到数据则表示用户名和密码一致,没有信息表示用户名密码错误
        #define LOGIN_USER "select id,score,total_count,win_count from user where username='%s' and password=SHA2('%s',256);"
        char sql[4096] = {0};
        sprintf(sql,LOGIN_USER,user["username"].asCString(),user["password"].asCString());
        MYSQL_RES* res = NULL;
        {
            std::unique_lock<std::mutex> lock(_mutex);
            bool ret = mysql_util::mysql_exec(_mysql,sql);
            if(ret == false)
            {
                DLOG("user login failed!!\n");
                return false;
            }
            //按理说要么有数据,要么没有数据,就算有数据也只能有一条数据
            res = mysql_store_result(_mysql);
            if(res == NULL)
            {
                DLOG("have no login user info!!");
                return false;
            }
        }
        
        int row_num = mysql_num_rows(res);
        if(row_num != 1)
        {
            DLOG("the user information queried is not unique!!");
            return false;
        }
        MYSQL_ROW row = mysql_fetch_row(res);
        user["id"] = (Json::UInt64)std::stol(row[0]);
        user["score"] = (Json::UInt64)std::stol(row[1]);
        user["total_count"] = (Json::UInt64)std::stol(row[2]);
        user["win_count"] = (Json::UInt64)std::stol(row[3]);
        mysql_free_result(res);
        return true;
    }
    bool select_by_name(const std::string &name, Json::Value &user) // 通过用户名获取用户信息
    {
        #define USER_BY_NAME "select id,score,total_count,win_count from user where username='%s';"
        char sql[4096] = {0};
        sprintf(sql,USER_BY_NAME,name.c_str());
        MYSQL_RES* res = NULL;
        {
            std::unique_lock<std::mutex> lock(_mutex);
            bool ret = mysql_util::mysql_exec(_mysql,sql);
            if(ret == false)
            {
                DLOG("get user by name failed!!\n");
                return false;
            }
            //按理说要么有数据,要么没有数据,就算有数据也只能有一条数据
            res = mysql_store_result(_mysql);
            if(res == NULL)
            {
                DLOG("have no user info!!");
                return false;
            }
        }
        int row_num = mysql_num_rows(res);
        if(row_num != 1)
        {
            DLOG("the user information queried is not unique!!");
            return false;
        }
        MYSQL_ROW row = mysql_fetch_row(res);
        user["id"] = (Json::UInt64)std::stol(row[0]);
        user["username"] = name;
        user["score"] = (Json::UInt64)std::stol(row[1]);
        user["total_count"] = (Json::UInt64)std::stol(row[2]);
        user["win_count"] = (Json::UInt64)std::stol(row[3]);
        mysql_free_result(res);
        return true;
    }
    bool select_by_id(uint64_t id, Json::Value &user) // 通过用户名获取用户信息
    {
        #define USER_BY_ID "select username,score,total_count,win_count from user where id='%ld';"
        char sql[4096] = {0};
        sprintf(sql,USER_BY_ID,id);
        MYSQL_RES* res = NULL;
        {
            std::unique_lock<std::mutex> lock(_mutex);
            bool ret = mysql_util::mysql_exec(_mysql,sql);
            if(ret == false)
            {
                DLOG("get user by id failed!!\n");
                return false;
            }
            //按理说要么有数据,要么没有数据,就算有数据也只能有一条数据
            res = mysql_store_result(_mysql);
            if(res == NULL)
            {
                DLOG("have no user info!!");
                return false;
            }
        }
        int row_num = mysql_num_rows(res);
        if(row_num != 1)
        {
            DLOG("the user information queried is not unique!!");
            return false;
        }
        MYSQL_ROW row = mysql_fetch_row(res);
        user["id"] = (Json::UInt64)id;
        user["username"] = row[0];
        user["score"] = (Json::UInt64)std::stol(row[1]);
        user["total_count"] = (Json::UInt64)std::stol(row[2]);
        user["win_count"] = (Json::UInt64)std::stol(row[3]);
        mysql_free_result(res);
        return true;
    }
    //胜利一场,天梯分数增加30,战斗场次+1,胜利场次+1
    bool win(uint64_t id)//胜利时天梯分数增加，战斗场次增加，胜利场次增加
    {
        #define USER_WIN "update user set score=score+30,total_count=total_count+1,win_count=win_count+1 where id=%ld;"
        char sql[4096] = {0};
        sprintf(sql,USER_WIN,id);
        bool ret = mysql_util::mysql_exec(_mysql,sql);
        if(ret == false)
        {
            DLOG("update win user info failed!!\n");
            return false;
        }
        return true;
    }
    //失败一场,天梯分数减少30,战斗场次-1,胜利场次-1
    bool lose(uint64_t id)//失败时天梯分数减少，战斗场次增加，其他不变
    {
        #define USER_LOSE "update user set score=score-30,total_count=total_count+1 where id=%ld;"
        char sql[4096] = {0};
        sprintf(sql,USER_LOSE,id);
        bool ret = mysql_util::mysql_exec(_mysql,sql);
        if(ret == false)
        {
            DLOG("update win user info failed!!\n");
            return false;
        }
        return true;
    }
};

#endif